International navigation rules

Here are the main navigation rules for kitesurfing:

The outside water rider has right of way over the inside water rider: the wind is sometimes gusty on land. The rider who is on the beach is the one more at risk, so he has the priority.
When two riders converge: the rider going starboard (kite right-hand side) has right of way and the rider going port tack (kite left-hand side) must give right of way and pass downwind with his kite as low as possible. There is no particular reason for this rule, but it is already applied in all other sports and nautical activities.
The rider going faster than another in the same direction must give way to the slowest rider: the one going faster is the one who has a global vision of the situation since he arrives from behind.
The rider passing upwind (windward) from another kiteboarder must fly his kite overhead: the kiteboarder downwind (leeward) must pilot his kite as low as possible.
The rider surfing a wave has the right of way over the one who is jumping or going in the opposite direction: when surfing a wave, the kite is less easy to pilot so there is less room for maneuvers. Nevertheless, the rule for the outgoing rider is applicable when the waves are close to the shore (shore break). In this case, the rider who is surfing will have to give way to the rider who is going out.
Right of way must be given to other ocean users: kiteboarding is the latest nautical sport. Kiteboard downwind to them.
A rider must have a clear safety zone of 50m downwind because he moves downwind when he jumps: a rider must have a clear safety zone of 30m upwind to jump because the lines could touch the kite of the lines of another rider kiteboarding close by.